Postpublished at 18:28 British Summer Time 21 August 2018
Ashwin is coming on. This could be interesting.
India need one more wicket to win Test
England were given faint hope by 169-run stand between Buttler & Stokes
Buttler hit highest Test score (106) in England rearguard
England lost four wickets for 10 runs after Buttler dismissal
Stokes registers his slowest Test half-century in making 62
Hosts chasing improbable 521 to win
Matthew Henry
Ashwin is coming on. This could be interesting.
Andrew Samson
BBC Test Match Special statistician
The extra half hour will be eight overs. So if it takes 45 minutes it will still be eight overs.
India need two wickets to win
The field is still set for the bouncer to Stuart Broad. I'm not sure he's good enough to play Shami's best ball. Just do that!
Broad is hopping around like a cat on a hot tin roof. Remember when his batting wasn't this comical?
Kohli does not look amused after another boundary.
Andrew Samson
BBC Test Match Special statistician
Stuart Broad has now reached 3,000 Test runs, making him the fifth all-rounder to reach 3,000 runs and 400 wickets.
Text 81111
At 17:30 I text my boss to say I'm taking tomorrow off because the cricket is getting exciting. Needless to say, by the time I got to my car and switched the radio on I soon text her to say I wasn't anymore.
Ian in Middlesbrough
Rashid 22, Broad 12
Stuart Broad is already improving his average in 2018. He was averaging just 6.5 but a hook for four takes his past that.
And again!
Broad knows the bouncer is coming and is already stepping away before the ball is bowled. It looks ridiculous but is kinda effective.
#bbccricket
Francis Edwards: Chris Woakes will not be a genuine class all rounder unless he can sort two things. One, he’s awful overseas. Two, he is very vulnerable to pace. We saw it in the winter with the Aussie juggernaut bowlers and here now with Bumrah.
Vic Marks
Ex-England spinner on BBC Test Match Special
It went very quickly and Kohli could not get his hands round it. He is looking at his hands as if they have betrayed him.
Rashid is living a charmed life. He edges another one to the slips - having been out off a no ball earlier - and this time Virat Kohli spills it! That's uncharacteristic from the India captain. It was a tough chance. He stares at his hands in disbelief.
Stuart Broad has done a good job at hiding at the non-striker's end in the last few overs while Rashid has swung from the hip.
He's got two balls of Shami's over to face now.
While Stokes and Buttler were still at the crease you felt England still had an outside chance.
Stokes looked heartbroken when he fell for his 275-minute 62.
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Kev in Essex: Only England can collapse twice in a single innings. Phenomenal!
India need two wickets to win
Adil Rashid is now England's third-highest scorer in the innings. With all the fielders in close there's little danger once he makes decent connection. The ball races away to the boundary. It's a bit hit and mix mind. After hitting that four he misses the next three.
The official close of play is 18:30 but if we get there and England are still batting then India can take the extra half hour to try and finish the job tonight.
Vic Marks
Ex-England spinner on BBC Test Match Special
It has been an entertaining day, ultimately a pretty unsuccessful one for England. The tempo has ebbed and flowed, the balance of the match hasn't really. India have been really impressive, even when they were not taking wickets. They have taken some good catches.
India have moved to the brink of winning this game with exceptional new-ball bowling. They've taken four wickets since taking it. Chris Woakes was the third of those...
Vic Marks
Ex-England spinner on BBC Test Match Special
Rashid has not got many runs in Test cricket but has scored stacks of runs in his own way for Yorkshire. As a reward he is going to have Bumrah round the wicket bowling bouncers at him.
Rashid is going to hit anything that is short and wide. This wristy shot off Bumrah is a copy of the one in the quick's previous over. It goes for four.
Bumrah has had enough and is going to try and bounce him out...
Top edge from Rashid... Six!
Buttler and Stokes batted for 346 balls but when Buttler fell Jonny Bairstow came in and followed him back to the pavilion after just one delivery.
Vic Marks
Ex-England spinner on BBC Test Match Special
Buttler played so well but there is a certain irony that for a man known as a one-day destroyer he didn't play a shot to get out.
India need two wickets to win
So England have Stuart Broad and Adil Rashid at the crease. They're not two men known for their defensive play. Neither look particularly interested in blocking out the 90-odd overs they'll have to to save this Test. Rashid is wafting at short balls.